1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
disa [49]
3 years ago
7

Historically, African elephants have had large ivory tusks. For many years, poachers (illegal hunters) have been killing elephan

ts that have large tusks so they could sell the ivory, which is valuable. Now, many African elephants have small tusks or do not develop tusks. Which of the following is true?
a. The trait of tusk size in elephants has changed over time.
b. Poaching has had no effect on the size of elephant tusks.
c. Elephants without tusks are more likely to be hunted than elephants with large tusks.
d. Elephants without tusks cannot reproduce.
Biology
1 answer:
nlexa [21]3 years ago
7 0
The answer is letter A.

The trait of the tusks have changed over time because of the process of evolution. Adaptive evolution occurs when species need to survive and thrive in their environment. The use and disuse theory can defend this statement. Elephants developed tusks in able for them to engage in activities that are needed for defense mechanisms for larger predators. Since, they are among the biggest mammals that roam the Earth, the need for the tusks is slowly deteriorating. This is why some of the elephants develop small or do not really develop their tusks. 
You might be interested in
Which is easier from a pr standpoint - conspiracy or contamination?
Damm [24]
I would have to say conspiracy.
6 0
3 years ago
He says ' I have no Class today 'turn in to indirect speech ​
Svetach [21]
Reported or indirect speech is usually used to talk about the past, so we normally change the tense of the words spoken. We use reporting verbs like 'say', 'tell', 'ask', and we may use the word 'that' to introduce the reported words. Inverted commas are not used.
7 0
3 years ago
Read 2 more answers
When researchers create __________, they are destroying a piece of the brain. A. Holes B. Currents C. Images D. Lesions Please s
Ira Lisetskai [31]
When researchers create lesions, they are destroying a piece of the brain.

8 0
2 years ago
Cell 4 and cell 7 will not be able to synthesize a major biological molecule. What molecule is this?
IrinaVladis [17]

Answer:

15. Cell 4 and Cell 7 will not be able to synthesize a major biological molecule. What molecule is this? Protein.

6 0
2 years ago
PLEASE HELP DUE VERY SOOONNNN PLEASEEE HELPPP
FrozenT [24]

Answer:

how can I help u with.

I can't see any pictures

u post a question picture.

I can answer u

7 0
2 years ago
Other questions:
  • Cells from advanced malignant tumors frequently have very abnormal chromosomes as well as an abnormal number of chromosomes. wha
    12·1 answer
  • What level controls intermediate relay for incoming and outgoing neurons?
    15·1 answer
  • Real-motion neurons found in the monkey cortex fire when _____ moves, but do not fire when _____ moves. a stimulus; the backgrou
    7·1 answer
  • Salt dissolved in water? Physical or chemical
    14·2 answers
  • Please answer this asap!! I only have 20 minutes left until I have to leave to my mom's. I'll give brainliest.
    14·1 answer
  • What is the most important organ in human body?
    8·2 answers
  • Which best describes reproduction?
    13·1 answer
  • A student was observing slides of cell division. In one of the slides, he noticed loosely coiled chromatin depicting DNA duplica
    14·1 answer
  • Which two forces work together to make sure the water moves up the xylem without interruption?
    6·2 answers
  • What is science explain?​
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!